Mesozoic Evolution of Western North Atlantic and North Tethyan Margins: A Comparison

Bourbon, Maurice

doi:10.2973/dsdp.proc.44.144.1978

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…In the lower Turonian of the Polish Zone a 3 m blue-to greenish-black bed of shale, rich in calcified radiolarians, is locally intercalated between variegated red marls. In the Brianconnais Zone, Western Alps, the Albian-Cenomanian is locally developed as interbedded radiolarian cherts and black claystones and siltstones (Bourbon 1978). Allied Aptian-Albian facies are furthermore found in the Vocontian Trough of the Maritime Alps, France.…”

Section: Pelagic Continental-margin Faciesmentioning

confidence: 99%

Cretaceous anoxic events: from continents to oceans

Jenkyns¹

1980

JGS

901

407

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Pelagic Cretaceous sediments, deposited in a range of palaeotectonic and palaeogeographic settings, from continents to oceans, are commonly black and bituminous. 3 particular time-envelopes define the major occurrences of such facies: late Barremian-Aptian-Albian, the Cenomanian-Turonian boundary and, to a lesser extent, the Coniacian-Santonian. These intervals define the duration of so-called Oceanic Anoxic Events during which global marine waters were relatively depleted in oxygen, and deposition of organic matter, derived from both terrestrial and planktonic sources, was widespread. Cretaceous OAEs correlate closely with transgressions, and such a correlation exists throughout the stratigraphical column. Flooding of land-masses is thought to have transported much terrestrial plant material seawards; the progressive increase in shelf-sea area is thought to have stimulated production of marine plankton. Bacterial consumption of this organic matter favoured the development of poorly oxygenated mid-to late Cretaceous waters in which many of the characteristic facies of the Period, including glauconitic sandstones and phosphatic chalks, were deposited.

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Section: Pelagic Continental-margin Faciesmentioning

confidence: 99%

Cretaceous anoxic events: from continents to oceans

Jenkyns¹

1980

JGS

901

407

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“…7). The subsidence which generated deep-sea troughs occurred almost simultaneous ly in several continental crustal regions in the northern Alpine Belt such as the Western Alps, Carpathians, and Balkans [50,63,68]. This subsidence did not produce any angular unconformities so did not result from stretch ing.…”

Section: Subsidence In the Early And Late Jurassicmentioning

confidence: 91%

“…This suggests the crust subsided below the aragonite compen sation depth in 2 to 3 m.y. For the Alpine belt in the Mesozoic this depth was estimated as 1.5 km [45,50].…”

Section: Formation Of the Middle Triassic Dinar-taurus Troughmentioning

confidence: 99%

The Role of Vertical and Horizontal Movements in Trough Formation on Continental Crust in Foldbelts

Artyushkov

Beer

1984

International Geology Review

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“…Finally, it is worth noting that sequences of Early Cretaceous pelagic limestones are also present both in the eastern Atlantic and the western Mediterranean. General comparisons have been drawn by Bernoulli (1972) and Bourbon (1978).…”

Section: Regional Comparisonsmentioning

confidence: 99%